package lqb;

public class E01LqbP11041 {
    public static void main(String[] args) {
        //int a = 202420242024;
        long num = 10;
        long a = 0;
        long b = 0;
        for (long i = 0; i < num; i++) {
            if (i % 2 == 0) {
                //偶数 加20
                a += 20;
            } else {
                b += 24;
            }
            System.out.println(a + " " + b);
        }

    }
}
